All of the scribes in Candlekeep are reporting eerie dreams, dreams in which the flying citadels of Ancient Netheril remain aloft among the clouds, with the modern skylines of Neverwinter and Waterdeep far below. These hazy visions all end the same way: with tremendous calamity as those fortresses smash down upon the defenseless metropolises. What aid can be enlisted when such doom is on the horizon?

A four-hour adventure for 17th to 20th-level characters in the Forgotten Realms campaign